Publication detail

Elastic properties of multi-layered ceramic systems for SOCs

MASINI, A. ŠIŠKA, F. ŠEVEČEK, O. CHLUP, Z. DLOUHÝ, I.

Original Title

Elastic properties of multi-layered ceramic systems for SOCs

English Title

Elastic properties of multi-layered ceramic systems for SOCs

Type

journal article in Web of Science

Language

en

Original Abstract

SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques have been compared and discussed.

English abstract

SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques have been compared and discussed.

Keywords

elastic constants, finite element analysis, fuel cells, layered ceramics

Released

31.03.2018

Publisher

Wiley

Location

USA

Pages from

370

Pages to

379

Pages count

10

URL

Documents

BibTex


@article{BUT141135,
  author="Alessia {Masini} and Filip {Šiška} and Oldřich {Ševeček} and Zdeněk {Chlup} and Ivo {Dlouhý}",
  title="Elastic properties of multi-layered ceramic systems for SOCs",
  annote="SOCs (Solid Oxide Cells) operate in harsh conditions and have to withstand considerable static and cyclic stresses, both mechanical and thermal. Thus, their mechanical stability is threatened. One fundamental aspect is the structural integrity of the cell. In fact, mechanical failure of a single cell can damage the whole stack, reducing the lifetime and the efficiency of the entire system. This study focuses on the ceramic layered structure of an Yttria-stabilized electrolyte supported cell. Its elastic modulus has been measured through destructive and nondestructive techniques (three-point bending test, impulse excitation technique, tensile test). Many literature sources deal with properties of the most common electrolytes and electrodes, yet co-sintering effects and interactions between layers are still not fully comprehended. In this contribution the overall elastic performance of the cell has been investigated, focusing on the role that the interface between layers plays in the changing of resulting mechanical properties. To enable this investigation, layers were added to the electrolyte one by one, thus allowing individual interactions to be distinguished with the help of numerical simulations. Results obtained for consecutive samples through different techniques
have been compared and discussed.",
  address="Wiley",
  chapter="141135",
  doi="10.1111/ijac.12801",
  howpublished="online",
  institution="Wiley",
  number="1",
  volume="2017",
  year="2018",
  month="march",
  pages="370--379",
  publisher="Wiley",
  type="journal article in Web of Science"
}